The Java EE 7 Platform: Developing for the Cloud
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The Java EE 7 Platform: Developing for the Cloud

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The Java EE 7 Platform: Developing for the Cloud @ Silicon Valley Code Camp

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The Java EE 7 Platform: Developing for the Cloud The Java EE 7 Platform: Developing for the Cloud Presentation Transcript

  • The Java EE 7 Platform: Developing for the CloudArun Gupta, Java EE & GlassFish Guyblogs.oracle.com/arungupta, @arungupta 1 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • Java EE 6 Implementations Fastest implementations of a Java EE release ever!2 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • Java EE – Developer Adoption Downloads 40 Million+ 45Millions 40 35 30 25 20 15 10 5 0 FY 06 FY 07 FY 08 FY 09 FY 10 FY 11 FY 12 3 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • And Today’s Cloud Offerings Are Vendor- Specific Infrastructure as Platform as Software as a Service a Service a Service …4 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • Java EE 75 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • Java EE 7 Focus: Platform as a Service • Provide way for customers and users to leverage public, private, and hybrid clouds • PaaS support entails evolutionary change • Next logical step for Java EE – J2EE  Java EE 6 : The Java EE Platform provides services – Java EE 7 : The Java EE Platform IS a service6 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • Java EE 7 PaaS Roadmap • Define new platform roles to accommodate PaaS model • Add metadata – For service provisioning and configuration – For QoS, elasticity – For sharing of applications and resources – For (re)configurability and customization • Add useful APIs for cloud environment – JAX-RS client API, Caching API, State Management, JSON,… • Extend existing APIs with support for multitenancy7 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • Roles Developer PaaS Provider PaaS Customer/ JVM JVM JVM JVM JVM JVM JVM JVM JVM Tenant Machine Machine Machine PaaS Product Provider JVM JVM JVM JVM JVM JVM JVM JVM JVMDeployer Machine Machine Machine PaaS Account Tenant 1 Tenant 2 Tenant 3 Manager Application Submitter PaaS Administrator Application Administrator 8 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • Java EE 7 Focus Area: Cloud Services, Not Just APIs• In the cloud tenant applications Tenant App Tenant App Tenant App consume services Java EE Application Level Services• PaaS administrators host, Queuing Service Persistence Service Caching Service … configure, and manage PaaS Infrastructure Services application and infrastructure Security Provisioning File … services Service Service Service Platform as a Service - Services• Existing APIs in Java EE need to IaaS Infrastructure Services be updated to be service-enabled Virt VIP VLAN Volume LBR … and tenant-aware – Example: pluggable services, late binding Infrastructure as a Service and tenant id injection 9 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • Java EE 7 Focus Area: Auto-Provision Services from Application Dependencies• Old Java EE Model 1 Deploy Application (EAR/GAR/SAR …) Cloud Administration Service • Configure Java EE resources – JDBC, JMS etc Provision and Database • Deploy Application EAR 2 Initialize Service• Java EE 7 Model • Provision and deploy application Provision and LDAP 3 resources Initialize Service (e.g. LDAP stripe, data source instantiation and connection …) Provision and Messaging 4• Extensible Deployment Initialize Service Models Supporting Multiple Provision and Application Frameworks 5 Initialize Container • Spring, Seam, Play …10 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • Services • Cloud apps consume services – Persistence, queueing, mail, caching, … • Service metadata facilitates ease of use when deploying into the cloud @DataSourceDefinition( name=“java:app/jdbc/myDB”, className=“oracle.jdbc.pool.OracleDataSource”, isolationLevel=TRANSACTION_REPEATABLE_READ, initialPoolSize=5 )11 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • Services • Cloud apps consume services – Persistence, queueing, mail, caching, … • Service metadata facilitates ease of use when deploying into the cloud @JMSConnectionFactory ( name=“java:app/myJMSConnectionFactory”, resourceType=“javax.jms.QueueConnectionFactory”) @JMSDestination( name=“java:app/myQueue”, resourceType=“javax.jms.Queue”)12 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • Services • Cloud apps consume services – Persistence, queueing, mail, caching, … • Service metadata facilitates ease of use when deploying into the cloud @MailSession ( name=“java:app/mailSession”, from=“MyService@ExtraServices.com” )13 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • Services • Cloud apps consume services – Persistence, queueing, mail, caching, … • Service metadata facilitates ease of use when deploying into the cloud @ConnectorService ( name=“java:app/myCustomConnector”, type=“com.extraServices.customConnector.class”, properties = {…} )14 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • Java EE 7 Focus Area: Elasticity Java EE 7 Focus: Move the Bar Right Elasticity Continuum Java EE Cluster Elastic Cluster Elastic Cluster Capacity Ca on DemandSingle node Java EE Multi-Node Dynamic Self AdjustingNon-Elastic Multi-Instance Clustering SLA Driven Elasticity • Service Levels • Minimum and Maximum Instances • Futures – Self Adjustment, Capacity On Demand 15 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • Demo PaaSing a Java EE Application in the Cloud16 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • Conference Planning in the Cloud Java EE Application JSF JPA Deploy Services EJB Metadata <glassfish-services> <service-description init-type="LB" name="ConferencePlanner-lb"> <template id="LBNative"/> <configurations> <configuration name="https-port" value="50443"/> <configuration name="ssl-enabled" value="false"/> <configuration name="http-port" value="50080"/> </configurations></service-description> <service-description init-type="JavaEE" name="ConferencePlanner">http://glassfish.org/javaone2011 <characteristics> <characteristic name="service-type" value="JavaEE"/> </characteristics> <configurations> <configuration name="max.clustersize" value="4"/> <configuration name="min.clustersize" value="2"/> </configurations> </service-description> ... </glassfish-services> 17 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • Service Provisioning Load Balancer Java EE Java EE ... Java EE Database18 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • Multi-tenancy in Java EE 7 • Support for separate isolated instances of the same app for different tenants – One application instance per tenant – Tenants correspond to units of isolation – Multitenant apps are declared as such – Each instance customized and deployed for a single tenant – Limited form of SaaS • Mapping to tenant done by the container • Tenant id available to application – E.g., under java:comp/tenantId or by injection19 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • Java EE 7 Focus Area: Application Level Multi Tenancy • Goal: Simple configuration • Flexible tenant discriminator support • Other areas impacted - JNDI, JMS, EJB …@Entity@Table(name=‚EMP‛)@MultiTenant(SINGLE_TABLE) depart_id DEPT_ID@TenantDiscriminator(name=‚company-id‛, columnName=‚COMPANY‛)public class Employee { EMP EMP_ID VERSION F_NAME L_NAME GENDER DEPT_ID 1 1 John Doe M 1 2 3 Jane Doe F 2 SELECT * FROM EMPLOYEE WHERE L_NAME LIKE ‘D%’ AND DEPT_ID= 120 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • Persistence Layer Multi-tenant Taxonomies • Dedicated App, Dedicated Database • Shared App, Dedicated Database • Dedicated App, Shared Database • Shared App, Shared Database21 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • Dedicated App, Dedicated Database Persistence Layer Multi-Tenant Taxonomies App is configured for tenant-id at bootstrap and connects to the data source22 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • Shared App, Dedicated Database Persistence Layer Multi-Tenant Taxonomies App knows tenant-id and connects with the tenant-specific data source23 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • Dedicated App, Shared Database Persistence Layer Multi-Tenant Taxonomies Tenant-id configured at bootstrap and connects to tenant-specific table or striped table24 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • Shared App, Shared Database Persistence Layer Multi-Tenant Taxonomies App knows tenant-id and connects to tenant specific table or striped table25 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • Java EE 7 Is Not Just Cloud-y • Alignment of ManagedBeans across CDI, EJB, JSF,… – POJO  ManagedBean  Enterprise JavaBean – Extension of container-managed transactions beyond EJB • Further simplifications for ease-of-development – JMS 2.0 focus on ease-of-development – Expanded use of dependency injection – Expanded service metadata; improved configuration • Pruning – EJB CMP and BMP, JAX-RPC, Deployment API • Update to Web Profile26 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • Java EE 7 JSRs • Platform 7 / Web Profile 7 • JCache 1.0 (JSR 107) • JPA 2.1 • Concurrency Utilities 1.0 • JAX-RS 2.0 • State Management 1.0 • EJB 3.2 • Batch Processing 1.0 • JMS 2.0 • JSON 1.0 • Servlet 3.1 • Common Annotations 1.2 MR • EL 3.0 • JAX-WS 2.3 MR • JSF 2.2 • JTA 1.2 MR • CDI 1.1 • JSP 2.3 MR • Bean Validation 1.1 • JASPIC 1.2 MR27 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • Transparency • Our Java EE 7 JSRs are run in the open on java.net – http://javaee-spec.java.net – One project per spec – e.g., jpa-spec, jax-rs-spec, jms-spec… • Publicly viewable Expert Group mail archive – Users observer list gets copies of all Expert Group emails • Publicly viewable download area • Publicly viewable issue tracker • Commitment to match JCP 2.8 Process28 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • Status and Schedule • Nearly all JSRs up and running • Remaining ones to be filed in next few weeks • Final release target: Q3 2012 • Date-driven release: anything not ready will be deferred to Java EE 829 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • How to Get in the Loop • Java EE 7 Expert Group Project – http://javaee-spec.java.net • Java EE 7 Reference Implementation – http://glassfish.org • The Aquarium – http://blogs.oracle.com/theaquarium30 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.
  • 31 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.